Ventilator



Nov. 14, 1939.

P. BERNHARDT 2,179.70?

VENTILATOR Filed May 14, 1936 2 Sheets-Sheet 1 PHC-SM1.

Patented Nov. 14, 1939 i UNETED STATES PATENT OFFICE VENTILATOR.

Paul Bernhardt, Milwaukee, Wis., assignor to Loeelholz Company,Milwaukee, Wis., a corporation of Wisconsin Application May 14, 1936,Serial No. 79,656

7 Claims. (Cl. 98-106) This invention relates to a ventilator or simi-Fig. 7 is a sectional view through the link on lar appliance. the line'I-'I Fig. 3.

The ventilator to which the invention applies The ventilator is providedin general with a in particular is of the type in which a frame or frameor casing I enclosing a passage for the casing enclosing a passage forthe delivery of air delivery of air therethrough, an adjustable i5therethrough is provided with an adjustable damper 2 arranged at therear of the casing to damper arranged to control the flow of airvcontrol the admission of air thereto and the dethrough the passage.livery of air therefrom, and an actuator con- The invention has for itsobject to provide the nected to the damper to adjust its position and 10damper with an actuator by which it is readily retain it in a fixedposition after its position has 10 movable to adjust its position andthen firmly rebeen adjusted. tained in its adjusted position. The casingi has an outward flange 3 at its Another object is to provide aventilator which o-uter edge to position it in its support and faissimple in construction and durable and efcilitate fastening it in placeby screws or other cient in service and which may be readilyasnstrumentalties, andV it has thereon across l5 sembled anddisassembled. the front of the passage therethrough a remov- Anotherobject is to provide a unitary Ventiable grating to obstruct accessthereto and keep lator which may be readily installed. extraneousobjects therefrom.

Another object is to provide a ventilator which The grating is formed bystrips 4 arranged may be readily and economically manufactured. apartfrom each other and carried by bars 5 ar- 20 According to the inventionas it is ordinarily ranged apart from each other and passing embodied inpractice, the ventilator is provided through the strips, and it isretained in place witha frame or casing enclosing a passage for in thecasing by a ledge 6 therein and pin 'I the delivery of air therethrough,an adjustable attached to the casing and bent over the grating.

damper arranged to control the ilow of air The damper 2 is pivoted tothe casing at its 25 through the passage, a rotatable operatingspinbottom by removable pintles 8 passing into lugs dle having a screwthread to form a screw there- 9 on the damper and casing, and therebyits po- On, a connecting link carried byk the operating sition isadjustable to control the admission of spindle to be movable by thescrew in `an axial air tothe Casing and the delivery 0f ail'theredirection thereto and having a transverse groove, from. 30 and apin attached at both ends to the damper The actuator by which the damperis moved and arranged lengthwise in the groove. at'will to adjust itsposition and retain it in a The ventilator which is hereinafterdescribed Xed DOSitiOn after its DOSOH has been adjustand illustrated inthe accompanying drawings to ed, is provided with a rotatable operatingspinexemplify the invention has been devised pridle Ill having a steeppitch screw thread at its 35 marily to control the delivery of fresh orcondiinner end to form a steep pitch SCIeW II. tioned air into railroadcars, but as will be The spindle I0 is supported by a bearing I2 readilyunderstood, the invention may take and formed on the casing androtatable by a knob I3 assume other forms and be embodied in other onits outer end, and it is retained from axial 40 appliances for varioususes and purposes. movement in its bearing by a flange I4 formed 40 Theviews of the ventilator shown in the ac- 1113011 it 011 the inside 0fits bearing and the companying drawings and hereinafter described knobI3 on the outside of its bearingare as follows: The spindle carries andsupports a link I5 that Fig. 1 is a front View of the ventilator arismovable by the screw in an axial direction ranged in an air deliverybox. thereto, and it is connected to the damper to 45 Fig. 2 is atransverse section on the line 2-2 adjust the position thereof upon thespindle be- Fig. 1. ing turned or rotated.

Fig. 3 is a vertical section on the line 3 3 Fig, The link I5 has at itsfront end a screw threadl, showing the damper in its closed position. edsocket I6 to receive the screw II, and it has Fig` 4 is a verticalsection on the line 3 3 near its rear and a transverse groove I1 to form50 Fig. 1, showing the damper in its open position. a hook I8 thereon.

Fig. 5 is a rear view of the ventilator on the The damper has formedtherein a pocket I9 line 5-5 Fig. 3. to receive the link, and a pin 2Uis attached at Fig. 6 is a sectional view through the actuator both endsto the damper Within the packet. spindle and link on the line 5 6 Fig.3. The pin is arranged lengthwise in the grooves 55 to connect the linkto the damper and facilitates disconnecting the damper from the link.

The link is retained from rotation by a guide 2| embracing the link andattached to the casing by screws 22.

The damper and the link have interposed therebetween to keep the damperfrom chattering, a spring 23 setting in a socket 24 in the pocket andhaving a cap 25 engaging the link and slidable into the socket.

When the spindle is turned or rotated, the screw will impart a ready andquick movement to the damper to adjust its position, but after thedamper has had its position adjusted, it will be retained by the screwin a fixed position until the spindle is again rotated to readjust itsposition.

The ventilator set forth herein may have its parts readily disassembledby removing the pintles from the lugs on the damper or casing and theknob from the spindle, and then disassociating the damper from theactuator and casing and the actuator from the casing, and likewise, itmay have its parts reassembled by reassociating the actuator with thecasing and the damper with the actuator and casing, and replacing thepintle in the lugs on the damper or casing and the knob on the spindle.

The railroad cars in which the particular ventilator described herein isdevised to be used, have installed in the walls thereof at suitableplaces a box 26 to support the ventilator.

y The box has an open top to admit thereto fresh air supplied through aconduit from the source of fresh or conditioned air, and an open frontto receive the casing of the ventilator.

The ventilator is retained in place upon the box by the ange on itscasing being fastened by screws to the wall around the box.

The box has across its front and top above the casing of the ventilatora removable plate 21 attached to lugs therein by screws.

The invention which has been set forth herein is susceptible of variousother embodiments from that obtaining in the particular embodimentthereof described in detail herein to explain its principles.

The invention described in the foregoing specification and shown in thedrawingsl forming a part thereof, is hereby dened and claimed asfollows:

1. An appliance such as described, comprising, in combination, a casingenclosing a passage, a movable damper having its position adjustable tocontrol the entrance to said passage, a link having a transverse groove,a rotatable spindle carrying said link and having a screw thread to movesaid link in an axial direction thereto, and a pin having both endsattached to said damper and arranged lengthwise in said groove toconnect said damper to said link.

2. An appliance such as described, comprising, in combination, a casingenclosing a passage, a damper pivoted to said casing, and having itsposition adjustablev to control the entrance to said passage, a linkhaving a transverse groove, a rotatable spindle carryingl said link andhaving a screw thread to move said link iny an axial direction thereto,a bearing retaining said spindle from axial movement, a guideretainingsaid link from turning, and a pin having both ends attached tosaid damper and arranged lengthwise in said transverse groove to connectsaid link to said dampen 3. An appliance such as described, comprising,in combination, a casing enclosing a passage, a movable damper havingits position adjustable to control the entrance to said passage, a linkhaving a transverse groove, a rotatable spindle carrying said link andhaving a screw thread to move said link in an axial direction thereto, abearing retaining said spindle from axial movement, a pin having bothends attached to said damper and arranged lengthwise in said groove toconnect said damper to said link, a guide retaining said link fromturning, and a spring arranged between said damper and said link to keepsaid damper from chattering.

4. An appliance such as described, comprising, in combination, a casingenclosing a passage, a damper pivoted to said casing and having itsposition adjustable to control the entrance to said passage, a linkhaving a transverse groove, a rotatable spindle carrying said link andhav# ing a screw thread to move said link in an axial direction thereto,a guide retaining said link from turning, a pin having both endsattached to said damper and arranged lengthwise in said transfersegroove to connect said link to said damper, and a spring arrangedbetween said damper and said link to keep said damper from chattering.

5. A ventilator, comprising in combination, a casing enclosing a passagefor the delivery of air therethrough, an adjustable damper arranged tocontrol the flow of air through said passage, a rotatable operatingspindle retained in a fixed axial position and having a screw thread toform a screw, `a link arranged on said spindle to be moved in an axialdirection thereto by said screw and connected to said damper to adjustits position and retain it in a xed position after its position has beenadjusted, and a spring arranged between said link and said damper tokeep said damper from chattering.

6. An appliance such as described, comprising, in combination, a casingenclosing a passage, a movable damper arranged to control the entranceto said passage and having a pocket formed therein, a link projectinginto said pocket and having a transverse groove, a rotatable operatingspindle carrying said link and having a screw thread to move said linkin an axial direction thereto, a bearing retaining said spindle fromaxial movement, a pin having both ends attached to said damper withinsaid pocket and arranged lengthwise in said groove, and a guideretaining said link from turning.

7. An appliance such as described, describing, in combination, a casingenclosing a passage, a movable damper arranged to control the entranceto said passage and having -a pocket formed therein, a link projectinginto said pocket and having a transverse groove, a rotatable operatingspindle carrying said link and having a screw thread to move said linkin an axial direction thereto, a bearing retaining said spindle fromaxial movement, a pin having both ends attached to said damper withinsaid pocket and arranged lengthwise in said groove, a guideretaining'said link from turning, and a spring arranged in said pocketbetween said link and said damper to keep said damper from chattering.

PAUL BERNHARDT.

. CERTIFICATE CE CORRECTION. Patent No. 2,179, 707,. November ILL, i959.

RAUL B ERNHARDT.

It is hereby certified thaterror appears in the printed specificationyofthe above numbered patent requiring correction as fol-lows: Page l',lsecond column, line 257 for the word "pin read pins; line 50, fory"and" reaciV Veno.; line A 514., for "packet" read pocket; line 575, for"grooves" read groove;

page 2, first column, line 6h, claim 2, after "casing" strike out thecomma;

and second column, line 2?, claim LL, for "transferse" read transverse;line 5T, claim T, for "describing" read Comprising; vandv'that the saidLetters Patent ,should be read with this correction therein that. theAsame may conform to the record of the case in the Patent Office. f I

Signed. and sealed this 26th day of December, A.n D., 1959.

Henry ,Van Arsdale, A(Seal) Acting Commissioner of Patents.

